Sheindlin, of course, has been the star of television show "Judge Judy" since 1996. Although she's not a Supreme Court justice, Sheindlin has been a judge in New York City for over 30 years, according to her biography on the show's website.

10% of college graduates answered on the Constitution Day Survey that they thought Judge Judy served on the U.S. Supreme Court. (www.goacta.org)